Cite

Bortnyik, Sándor

MLA

Dreier, Katherine S. (Katherine Sophie), 1877-1952. Bortnyik, Sándor. Box 95, folder 2408. 1949, n.d.. https://collections.library.yale.edu/catalog/16694457.

APA, 6th edition

Dreier, Katherine S. (Katherine Sophie), 1877-1952. (["Box 95, folder 2408"])(1949, n.d.)[Bortnyik, Sándor]. https://collections.library.yale.edu/catalog/16694457.